Direct velocity estimator for ultrasound blood flow imaging

Details Direct velocity estimator for ultrasound blood flow imaging Direct velocity estimator for ultrasound blood flow imaging

1990-08-29

1991-10-22

Jaworski, Francis

Surgery

Truss

Pad

12866109, A61B 800

Patent

active

050585940

ABSTRACT:
A method and apparatus for estimating blood flow velocities with an ultrasound imaging system. The method includes radiating a plurality of ultrasound beams having a fixed phase relationship with a reference frequency; receiving a plurality of successive echoes from the successive beams from the same volume of blood; and estimating the blood flow velocity from the phase shift changes, relative to the reference frequency, between a plurality of successive echo pairs by multiplying each phase shift change by coefficients stored in a RAM and accumulating the results. Desirably, the phase shift changes between the multiple pairs of successive echoes are weight averaged during the multiplication and accumulation process to arrive at the velocity estimate. A method of improving the blood flow velocity estimate at a given volume by obtaining velocity estimates at a plurality of contiguous volumes and multiplying each velocity estimate by coefficients stored in a RAM and accumulating the products to arrive at a substitute velocity estimate at the given volume.

REFERENCES:
patent: 4328707 (1982-05-01), Clement et al.
patent: 4612937 (1986-09-01), Miller
patent: 4719923 (1988-01-01), Hartwell et al.
patent: 4751929 (1988-06-01), Hayakawa et al.
patent: 4790323 (1988-12-01), Leavitt et al.
patent: 4800891 (1989-01-01), Kim
patent: 4809703 (1989-03-01), Ishikawa et al.
patent: 4819652 (1989-04-01), Micco
patent: 4888694 (1989-12-01), Chesarek
patent: 4905206 (1990-02-01), Nishiyama et al.

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